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Thread: which P38 ?

  1. 8th March 2014, 05:40 PM #21
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    wayneg
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    PeterJam and I spent a couple of hours looking over both my cars with a Blackbox test set. The Police setting give a couple of degrees more advance. could not find anything else
    cant be more specific than that
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  2. 8th March 2014, 06:00 PM #22
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    So it's essentially a performance enhancing drug! I wonder if it alters the transmission settings too?
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  3. 8th March 2014, 06:02 PM #23
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    I'll have a look on the BBS forum
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  4. 8th March 2014, 06:22 PM #24
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    Please let us know your findings
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  5. 8th March 2014, 06:50 PM #25
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    So all I could find on Police mode was:

    - When fitted with the switches, would enable the flashing lights
    - Allows the engine to run with the keys out and doors locked
    - Disables the rev limiter on Thor motors
    - Runs a richer fuel map from 3000rpm onwards

    Apparently it super-chills the doughnut fridge in the rear as well.

    Cheers
    Keithy
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  6. 8th March 2014, 11:37 PM #26
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    We definitely observed more advance which we were looking out for after the 1st observation, having no blues and two`s on the roof and no doughnut cooler I will have to take your word on that. My engine turns off when I turn and remove the key thankfully. Better keep it below 3000rpm or the fuel consumption might suffer.
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  7. 8th March 2014, 11:43 PM #27
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    Yeah! Could be handy when towing and overtaking though!
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  8. 9th March 2014, 12:34 AM #28
    Hoges
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    Quote Originally Posted by wayneg View Post
    We definitely observed more advance which we were looking out for after the 1st observation, having no blues and two`s on the roof and no doughnut cooler I will have to take your word on that. My engine turns off when I turn and remove the key thankfully. Better keep it below 3000rpm or the fuel consumption might suffer.
    How did you observe the additional advance? did you notice any measurable performance improvement? Am thinking that with 95/98 octane and the transmission button set for "sport", it might be worth it... there's a big performance hole in the low compression fuel map between 1700 and 2500 rpm especially in top gear...damn I miss my 5.7L of sequentially fuel injected wizardry from Detroit!!!
    MY99 RR P38 HSE 4.6 (Thor) gone (to Tasmania)
    2020 Subaru Impreza S ('SWMBO's Express' )
    2023 Ineos Grenadier Trialmaster (diesel)
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  9. 9th March 2014, 01:16 AM #29
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    It's only a matter of enabling it on the BECM, isn't it?

    When I've got a few days spare I'll enable it and go for a drive.
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  10. 9th March 2014, 10:20 AM #30
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    Yes its only a BECM switchable item.
    With the engine running connected to live data on the Blackbox Rovacom unit ( Pro Garage setup ) Peterjam, well versed in these things was monitoring the live data. Not 100% what we were looking at screen wise but it showed lots of data including advance . Also showed one oxygen sensor full rich, not working and a random missfire.
    He was surprised to see more more advance and pointed it out
    As the new car had it set to on when I bought it I presumed it was something a clued up LPG fitter switched on when installing the Sequential Gas.
    As for performance the new car feels more sprightly than the other but that might be just the correct size tyres .
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